Singapore is a single unitary jurisdiction, so unlike federal countries there is no state-by-state variation in the KETs rules: the same Employment Act 1968 and the same Ministry of Manpower requirements apply island-wide, whether the workplace is in the Central Business District, Jurong or Tampines. What varies is not geography but the category of worker, and that distinction does real work.
The core protections of the Act now reach most employees, including managers and executives, but a narrower band of provisions on hours of work, rest days, overtime and public holidays applies only to workmen and to non-workmen earning 2,600 SGD a month or less. A KETs statement for a senior executive will therefore mark the hours-of-work and overtime fields differently from one issued to a rank-and-file worker, even though both are entitled to the statement. Getting this classification wrong is a frequent source of error, because an employer who copies an executive template onto a workman's statement may omit overtime terms the worker is legally owed.
Work-pass holders add a further layer. Employment Pass and S Pass employees are covered by the KETs requirement just as citizens and permanent residents are, but their statements interact with the conditions of the work pass and, for certain passes, with the Fair Consideration Framework. Employers hiring foreign staff often issue the KETs alongside a confidentiality and non-disclosure agreement under Singapore law where the role touches sensitive information, since the restraint-of-trade rules are the same regardless of nationality.